a feature unique to this isotope. In excited states, a nuclei's protons or neutrons have higher than normal energy levels. Although energetically possible, the radioactive decay of this excited ...

This decay means the amount of carbon-14 in an object tells its age, which is why archaeologists and similar science fields use carbon-14 dating. Many isotopes are very unstable and can exist in ...

The Facility for Rare Isotope Beams achieved the highest-power beam of uranium ions ever in the world. "We're already now in ...

Stable isotopes do not decay into other elements. In contrast, radioactive isotopes (e.g., 14C) are unstable and will decay into other elements. The less abundant stable isotope(s) of an element have ...

Some commonly used dating methods are summarized in Table 1. The rate of decay for many radioactive isotopes has been measured and does not change over time. Thus, each radioactive isotope has ...

giving off radiation and changing into a different isotope. The rate at which nuclei decay is constant. Half-life describes the interval of time during which half of the original atoms decay.

Certain isotopes are unstable and undergo a process of radioactive decay, slowly and steadily transforming, molecule by molecule, into a different isotope. This rate of decay is constant for a ...

Some commonly used dating methods are summarized in Table 1. The rate of decay for many radioactive isotopes has been measured and does not change over time. Thus, each radioactive isotope has ...

The half-life of thorium-232 is about 14 billion years. Two other isotopes of thorium, which can be significant in the environment, are thorium-230 and thorium-228. Both decay by alpha emission, with ...